article 257 nonhuman 184 controlled study 171 Animals 166 priority journal 166 animal cell 116 Humans 93 human 89 Mice 86 unclassified drug 83 mouse 82 protein expression 71 human cell 69 metabolism 61 signal transduction 53 animal 47 animal experiment 47 Female 46 female 44 protein function 44 animal tissue 40 male 39 Cell Line 38 Animalia 36 genetics 36 Male 35 messenger RNA 35 Signal Transduction 33 physiology 33 cell proliferation 32